US7371001B2 - Light guide plate - Google Patents
Light guide plate Download PDFInfo
- Publication number
- US7371001B2 US7371001B2 US11/498,485 US49848506A US7371001B2 US 7371001 B2 US7371001 B2 US 7371001B2 US 49848506 A US49848506 A US 49848506A US 7371001 B2 US7371001 B2 US 7371001B2
- Authority
- US
- United States
- Prior art keywords
- slant
- light
- guide plate
- light guide
- reflecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
Abstract
Description
A(1)<A(2)<··A(m−1)<A(m)··A(n−1)<A(n)
B(1)<B(2)<··B(m−1)<B(m)··B(n−1)<B(n)
A(m)=B(m)
wherein A(m) represents the inclination angle of the first slant surface of the m-th reflecting prism from the first side surface toward the second side surface, B(m) represents the inclination angle of the second slant surface of the m-th reflecting prism from the second side surface toward the first side surface. The number of the reflecting prisms formed between the first side surface and the second side surface is “n”.
A(1)<A(2)<··A(m−1)<A(m)··A(n−1)<A(n)
B(1)<B(2)<··B(m−1)<B(m)··B(n−1)<B(n)
A(m)=B(m)
wherein A(m) represents the inclination angle of the
Claims (6)
A(1)<A(2)<-.A(m−1)<A(m)--A(n−1)<A(n)
B(1)<B(2)<--B(m−1)<B(m)--B(n−1)<B(n)
A(m)=B(m)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JPJP2005-224788 | 2005-08-03 | ||
JP2005224788A JP4671344B2 (en) | 2005-08-03 | 2005-08-03 | Light guide plate and backlight device using the same |
Publications (2)
Publication Number | Publication Date |
---|---|
US20070030698A1 US20070030698A1 (en) | 2007-02-08 |
US7371001B2 true US7371001B2 (en) | 2008-05-13 |
Family
ID=37697514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/498,485 Active US7371001B2 (en) | 2005-08-03 | 2006-08-03 | Light guide plate |
Country Status (3)
Country | Link |
---|---|
US (1) | US7371001B2 (en) |
JP (1) | JP4671344B2 (en) |
DE (1) | DE102006036089B4 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7873257B2 (en) | 2007-05-01 | 2011-01-18 | Morgan Solar Inc. | Light-guide solar panel and method of fabrication thereof |
US8328403B1 (en) | 2012-03-21 | 2012-12-11 | Morgan Solar Inc. | Light guide illumination devices |
US8885995B2 (en) | 2011-02-07 | 2014-11-11 | Morgan Solar Inc. | Light-guide solar energy concentrator |
US9040808B2 (en) | 2007-05-01 | 2015-05-26 | Morgan Solar Inc. | Light-guide solar panel and method of fabrication thereof |
US9337373B2 (en) | 2007-05-01 | 2016-05-10 | Morgan Solar Inc. | Light-guide solar module, method of fabrication thereof, and panel made therefrom |
US9435934B2 (en) | 2013-03-15 | 2016-09-06 | Morgan Solar Inc. | Optics for solar concentrators |
US9464783B2 (en) | 2013-03-15 | 2016-10-11 | John Paul Morgan | Concentrated photovoltaic panel |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4854497B2 (en) * | 2006-12-21 | 2012-01-18 | 株式会社 日立ディスプレイズ | Liquid crystal display |
JP5011151B2 (en) | 2008-02-12 | 2012-08-29 | 株式会社日立製作所 | Liquid crystal display equipment |
JP4607986B2 (en) * | 2008-05-01 | 2011-01-05 | ライツ・アドバンスト・テクノロジー株式会社 | Light guide plate and flat illumination device |
JP5502289B2 (en) * | 2008-05-14 | 2014-05-28 | 株式会社ジャパンディスプレイ | Liquid crystal display |
KR20140066522A (en) * | 2012-11-23 | 2014-06-02 | 삼성디스플레이 주식회사 | A backlight unit and a display apparatus having the backlight unit |
US10088621B2 (en) | 2013-12-17 | 2018-10-02 | Samsung Display Co. Ltd. | Light guide panel, backlight unit, and liquid crystal display |
KR102147253B1 (en) * | 2013-12-17 | 2020-08-25 | 삼성디스플레이 주식회사 | Light guide panel, backlight unit and liquid crystal display comprising the same |
WO2020029004A1 (en) * | 2018-08-06 | 2020-02-13 | 瑞仪(广州)光电子器件有限公司 | Light guide plate, backlight module, and display device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5420761A (en) * | 1993-03-29 | 1995-05-30 | Precision Lamp, Inc. | Flat, thin, uniform thickness large area light source |
US5485291A (en) * | 1994-02-22 | 1996-01-16 | Precision Lamp, Inc. | Uniformly thin, high efficiency large area lighting panel with two facet grooves that are spaced apart and have light source facing facets with smaller slopes than the facets facing away from the light source |
US6256447B1 (en) * | 1998-12-31 | 2001-07-03 | Physical Optics Corporation | Backlight for correcting diagonal line distortion |
US20010013976A1 (en) | 2000-02-16 | 2001-08-16 | Citizen Electronics Co., Ltd. | Illuminating device for a display |
JP2002042529A (en) | 2000-07-24 | 2002-02-08 | Sanyo Electric Co Ltd | Surface lighting device |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU4409496A (en) * | 1994-11-29 | 1996-06-19 | Precision Lamp, Inc. | Edge light for panel display |
US5897184A (en) * | 1996-07-02 | 1999-04-27 | Dimension Technologies, Inc. | Reduced-thickness backlighter for autostereoscopic display and display using the backlighter |
JP2003281920A (en) * | 2002-03-22 | 2003-10-03 | Casio Comput Co Ltd | Lighting device |
JP2004200128A (en) * | 2002-12-20 | 2004-07-15 | Koninkl Philips Electronics Nv | Auxiliary light source and front light using it |
-
2005
- 2005-08-03 JP JP2005224788A patent/JP4671344B2/en not_active Expired - Fee Related
-
2006
- 2006-08-02 DE DE102006036089.3A patent/DE102006036089B4/en not_active Expired - Fee Related
- 2006-08-03 US US11/498,485 patent/US7371001B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5420761A (en) * | 1993-03-29 | 1995-05-30 | Precision Lamp, Inc. | Flat, thin, uniform thickness large area light source |
US5485291A (en) * | 1994-02-22 | 1996-01-16 | Precision Lamp, Inc. | Uniformly thin, high efficiency large area lighting panel with two facet grooves that are spaced apart and have light source facing facets with smaller slopes than the facets facing away from the light source |
US6256447B1 (en) * | 1998-12-31 | 2001-07-03 | Physical Optics Corporation | Backlight for correcting diagonal line distortion |
US20010013976A1 (en) | 2000-02-16 | 2001-08-16 | Citizen Electronics Co., Ltd. | Illuminating device for a display |
JP2002042529A (en) | 2000-07-24 | 2002-02-08 | Sanyo Electric Co Ltd | Surface lighting device |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7873257B2 (en) | 2007-05-01 | 2011-01-18 | Morgan Solar Inc. | Light-guide solar panel and method of fabrication thereof |
US7991261B2 (en) | 2007-05-01 | 2011-08-02 | Morgan Solar Inc. | Light-guide solar panel and method of fabrication thereof |
US8152339B2 (en) | 2007-05-01 | 2012-04-10 | Morgan Solar Inc. | Illumination device |
US9040808B2 (en) | 2007-05-01 | 2015-05-26 | Morgan Solar Inc. | Light-guide solar panel and method of fabrication thereof |
US9335530B2 (en) | 2007-05-01 | 2016-05-10 | Morgan Solar Inc. | Planar solar energy concentrator |
US9337373B2 (en) | 2007-05-01 | 2016-05-10 | Morgan Solar Inc. | Light-guide solar module, method of fabrication thereof, and panel made therefrom |
US8885995B2 (en) | 2011-02-07 | 2014-11-11 | Morgan Solar Inc. | Light-guide solar energy concentrator |
US8328403B1 (en) | 2012-03-21 | 2012-12-11 | Morgan Solar Inc. | Light guide illumination devices |
US8657479B2 (en) | 2012-03-21 | 2014-02-25 | Morgan Solar Inc. | Light guide illumination devices |
US9435934B2 (en) | 2013-03-15 | 2016-09-06 | Morgan Solar Inc. | Optics for solar concentrators |
US9442241B2 (en) | 2013-03-15 | 2016-09-13 | Morgan Solar Inc. | Optics for illumination devices |
US9464783B2 (en) | 2013-03-15 | 2016-10-11 | John Paul Morgan | Concentrated photovoltaic panel |
Also Published As
Publication number | Publication date |
---|---|
US20070030698A1 (en) | 2007-02-08 |
DE102006036089B4 (en) | 2017-11-23 |
JP2007042404A (en) | 2007-02-15 |
JP4671344B2 (en) | 2011-04-13 |
DE102006036089A1 (en) | 2007-02-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CITIZEN ELECTRONICS CO., LTD., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MIYASHITA, JUNJI;REEL/FRAME:018135/0399 Effective date: 20060626 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 12 |